LanguageTWF
ArcView world coordinates file
File type: GIS, GPS navigation and map file
Files with twf extension can be encountered as data files with world coordinates from ArcView / ArcGIS for Desktop by ESRI.
Found 4 different file type records with the same twf filename suffix.
What is twf file?
File type category:
GIS, GPS navigation and map file
Date updated: December 4, 2023
File extension twf is probably best known for specific use in ESRI ArcView GIS software.
twf files provide real world coordinate information that allows a corresponding .tif file to be correctly positioned on a map or in a mapping system.
They are in ASCII editable format that contain six numbers, one on each line. Something like this:
-
0.7 0 0 -0.9 547000.216 789412.471
Each line provides the following information:
- Line 1: X-scale. This is the horizontal distance in meters represented by each pixel. So in the above example each pixel is .7 meters wide.
- Line 2: Rotation about the Y axis.
- Line 3: Rotation about X axis.
- Line 4: Y-scale This is the vertical distance in meters represented by each pixel. So in the above example each pixel is .9 meters tall. Normally negative, because whilst an image has its origin in the top left corner, for Northings and Eastings the origin is normally considered to be the bottom left corner - hence why the scale is normally negative.
- Line 5: X-reference point. This is the horizontal coordinate (or Easting) of the center of the top left pixel.
- Line 6: Y-reference point. This is the vertical coordinate (or Northing) of the center of the top left pixel.
Occasionally the twf files can also have two additional lines, but they are not part of the standard ArcView TWF file format.
- Line 7: Grid zone or Coordinate System.
- Line 8: Datum
How to open twf file?
Use ArcView (ArcGIS for Desktop) to open .twf world coordinates files.
How to convert twf file?
ArcGIS can be able to export .twf files to other file formats.
Suggested software to open twf file:
Associated software actions with the twf file
Software applications that can open twf files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
Software applications that can edit twf files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
Software capable of saving twf files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
Software apps that create twf files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
Software apps that export twf files:
Terrain Navigator (Microsoft Windows)
Casio organizer data
File type category:
Various data file
Date updated: June 27, 2017
The twf file extension is associated with portable electronic organizers and digital diaries that allows users to store contacts, memos etc. developed by Casio.
The twf file stores various data used for internal purposes of the Casio organizer.
TabWorks data
File type category:
Various data file
Date updated: February 14, 2017
The twf file extension is related to the TabWorks, a graphics shell for Microsoft Windows 3.x and Microsoft Windows 95 operating systems, developed by Xerox.
The twf file contains some kind of data used by TabWorks.
Tecgraf Web Format
File type category:
Internet related file
Date updated: February 14, 2017
The twf file extension is related to the Tecgraf Web Format, a file format designed to represent a drawing that contains lines, regions, text, and images to be sent through the Web for displaying, browsing, and printing.